A screening method for Brassica napus varieties suitable for mechanical harvesting and its application

Abstract

The present invention provides a method for screening Brassica napus varieties suitable for mechanical harvesting and application thereof. The screening method includes step S1, selecting a test variety to carry out at least two repeated planting tests on a first experimental field; step S2, recording the test In the final flowering stage and the mature stage of the variety, a representative plant is marked at the final flowering stage; Step S3, after 15-25 days in the final flowering stage, the effective silique water content of the representative plant is measured every day until it is lower than 20%; Step S4, On the basis of step S3, pick a plurality of effective siliques in different growth parts of representative plants and carry out the difference test of effective silique moisture content before and after dehydration, and screen out the difference in effective silique moisture content every day after 15-25 days of final flowering The varieties with a rate of not more than 10% are the target varieties suitable for mechanical harvesting. The application of the target varieties screened by the screening method in mechanized planting greatly reduces the mechanical harvesting loss of rapeseed.

Description

technical field [0001] The invention relates to the technical field of agricultural planting and cultivation, in particular to a method for screening Brassica napus varieties suitable for mechanical harvesting and its application. Background technique [0002] Rapeseed is one of the main oil crops in my country, and it is also an important oil crop to ensure the security of my country's grain and oil supply. In the face of increasing labor costs, the traditional labor method of manually harvesting rapeseed makes the production efficiency of rapeseed low. Therefore, fully realizing the mechanized production of rapeseed is the main measure to improve the production efficiency of rapeseed. Because rapeseed is an infinite inflorescence crop, it has the characteristics of flowering first, then ripening, and then flowering and then ripening. This characteristic makes the ripening of siliques uneven, which brings difficulties to mechanized harvesting of rapeseed. Among them, the ...

AI Technical Summary

Problems solved by technology

However, considering the uneven ripening of siliques, it is impossible to ensure that all siliques of rapeseed have a moisture content of 12%-20%

Therefore, mechanical harvesting of rapeseed in the range of silique water content 12%-20% is prone to large mechanical harvesting losses, thereby reducing the economic benefits of rapeseed

In addition, if the harvest is too early, the siliques are not fully mature, the water content of the siliques is high, and the loss of mechanical cleaning and threshing is large; if the harvest is too late, the siliques are too mature, the water content of the siliques is low, and the siliques are easy to fall off naturally and the loss is large.

[0004] In summary, there is an urgent need for a screening method for Brassica napus varieties suitable for mechanical harvesting and its application to solve the problem of large losses in rapeseed mechanical harvesting in the prior art

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